*{
    margin: 0;
    padding: 0;
}

body{
    display: flex;
    flex-direction: column;
}

body #head{
    position: relative;
    height: 100px;
    background-color: #017840;
}

#head>button{
    position: absolute;
    right: 70px;
    bottom: 30px;
}

body #section{
    float: left;
    height: 1000px;
    width: 20%;
    background-color: #ffffff;
}

body #content{
    float: right;
    height: 100%;
    width: 80%;
    background-color: #f7f7f7;
}

ul li{
    list-style-type: none;
}

.logo img{
    border-radius: 50%;
    width: 70px;
    height: 70px;
    margin-top: 10px;
    margin-left: 20px;
}

.logo{
    position: relative;
}

.logo>b{
    position: absolute;
    margin-top: 22px;
    padding-top: 15px;
    padding-left: 15px;
    color: azure;
    font-size: larger;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}